package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {

    @Pointcut("execution(* com.sky.service.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointcut(){}


    @Before("autoFillPointcut()")
    public void autoFill(JoinPoint joinPoint) {
        log.info("开始进行公共字段自动填充...");
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();

        Object args[] = joinPoint.getArgs();
        if(args== null || args.length == 0)
        {
            return ;
        }

        Object entity = args[0];

        LocalDateTime now = LocalDateTime.now();
        Long  currentId = BaseContext.getCurrentId();

        if(operationType== OperationType.INSERT)
        {
            try {
                Method setCreateTime = entity.getClass().getMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setCreateUser = entity.getClass().getMethod(AutoFillConstant.SET_CREATE_USER, long.class);
                Method setUpdateTime = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_USER, long.class);

                setCreateTime.invoke(entity,now);
                setCreateUser.invoke(entity,currentId);
                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);

            }catch (Exception e)
            {
                e.printStackTrace();
            }
        }
        else if(operationType== OperationType.UPDATE)
        {
            try {
                Method setUpdateTime = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_USER, long.class);

                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);

            }catch (Exception e)
            {
                e.printStackTrace();
            }
        }


    }



}
